Two layers of board provide outstanding heavy duty protection of goods on these premium brown book boxes which are the ultimate in book wrap protection. They are suitable for posting books, CDs, DVDs & any solid flat items as they adjust to the height of your products. Manufactured from corrugated board with a Kraft finish the tough, tamper evident seal produced by the adhesive strip means there is no need for tape, glue or strapping. The extended arms that literally hug the book box also provide an extra defence against shocks & resist the effects of crushing. Adjustable in height from 10 to 60 mm, the grooves allow the book box to adjust to the size of your product. Minimum internal height 10mm, maximum internal height 60mm. Delivered flat packed. Contact Rajapack on 0800 542 44 28 if you have any queries about these or any of our other book or wraparound products. Sold in packs of 25, priced per book box. Quantity Available in packs of 25. Want to buy more? See our discounts for 100 or more book boxes. Size & shape options With a minimum external height of 10mm & maximum height of 60mm, these book boxes start at 300x 186mm through to 490x 316mm (Lx W, external). Weights & limits Features extended corner protection for resistance to crushing, perfect for protecting books or other flat items during posting. These book wraps also feature a tamper evident closure.